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Say something
One address, read by a person. Not a form that disappears into nowhere.
Corrections are the most useful thing you can send. Tell me the article and where I went wrong — a source helps, but isn't required.
Disagreements are welcome too. So are ideas, requests, and the occasional "you completely missed the point", which is usually right.
What I won't answer: anything asking what to do about your health, your money, or a legal situation. Not because I'm being cold, but because I'm not qualified, and pretending otherwise would be worse than saying nothing.